Weight and price indicating scale.



No. 674,883. 1 mm May 28, won.

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WEIGHT AND PRICE 'INDICATIIG SCALE.

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No. 674,883. I Patented May 28,1901;

WEIGHT AND PRICE INDICATING SCALE.

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No. 674,883. Patent ed May 28, 190i.

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No. 674,883. Patented ma 28, I901.

A. u. SMITH. WEIGHT 'AND PRICE INDICATING SCALE.

(Application filed Mar. 9, 1900.)

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UNITED STATES PATENT OFFICE.

ALBERT U. SMITH, OF SAUGATUCK, CONNECTICUT, ASSIGNOR TO THE COMPUTINGSCALE COMPANY, OF DAYTON, OHIO.

WEIGHT AND PRICEINDICATING SCALE.

SPECIFICATION forming part of Letters Patent No. 674,883, dated May 28,1901.

Application filed March 9, 1900. Serial Na. 8,021.,, (No model.)

and specifically to that class illustrated in my Letters Patent No.545,616, of April 3, 1895, reissued, No. 11,536, April 28, 1896, as wellas in my Letters Patent No. 597,300, dated January 11, 1898.

My present invention has for its object the providing of meansapplicable to all scales employing springs for adjustment of themechanism of said spring or springs to compensate for the variations intemperature. So far as I am aware I am the first in the art to devise,construct, and use such means or mechanism, and the broader claimsthereon are not to be restricted in their scope to any particular orspecific form of apparatus, but to all forms embodying means foradjusting the mechanism or the spring to compensate for the differentdegrees of temperature, however widely they may difier in construction.

Inthe drawings, Figure 1 illustrates a front elevation of a scaleembodying my invention. Fig. 2 is an enlargedceutral vertical sectionalview of one of the draft-bars and indicatorcontrollers. Fig. 3 is anenlarged sectional plan view on line X X of Fig. 1. Fig. 4 is a frontelevation of the lower portion of the scale shown in Fig. .1, havingadded thereto the means for accommodating the mechanism and springs todifferent degrees of temperature. Fig. 5 is an end View of the partsshown in Fig. 4. Fig.6 is an enlarged elevation on line X X of Fig. 4:.Fig. 7 is a sectional view on line X X of Fig. 8. Fig. 8 is a sectionalview online X X of Fig. 6. Fig. 9 is a diagrammatic enlarged frontsectional view of the cam and spring-bars of the means for accommodatingthe mechanism to different degrees of temperature. Fig. 10 is a frontview of a scale similar to Fig. 1, but having the end covers of thecasing removed and having the front top plate removed to expose the supporting-rod at the top of the scale. Fig. 10% is a top plan view of oneend of the scale-casing with the controller removed. Fig. 11 is a sideelevation of Fig. 10 with the end controller removed and the front topplate added. Fig. 11% is an enlarged bottom plan view of thescale-suspending means. Fig. 12 is a central vertical sectional detailview of a portion of the spring and its supporting and connecting means.Fig. 13 is a sectional view on line X X of Fig. 12. Fig. 14 is anenlarged front elevation of the exposing opening, through which only theweight of the load is indicated, the adjacent portion of the casingbeing broken away. Fig. 15 is a plan view of the indicator-drum. Fig. 16is a sectional detail view of one end of the spindle of theindicator-drum, showing the pinion and the manner of securing saidpinion to said drum. Fig. 17 is a sectional side elevation in detail ofa portion of the end frames and outer casing,

showing the means for adjustably mounting the glass over the openingthat exposes the weights and prices of the loads. Fig. 18 is a sideelevation of the parts shown in Fig. 17 looking from the left. Fig. 19is an end view of the indicator-drum. Figs. 20, 21, and 22 illustratedetails of construction thereof. Fig. 23 illustrates a central verticalsectional view through the indicator-spindle, the central portionthereof being broken away. Fig. 24

is a reduced sectional side elevation on line X X of Fig. 14.

Fig. 25 is an enlarged sectional plan view on line X X of Fig. 11. Fig.26 is a front elevation of the glass employed in the indicator shown inFigs. 24. and 14:. Fig. 27 is a sectional view, on line Y Y of Fig. 11,of the end-frame casting; and Fig. 28 is a plan view of the flat sheetwhich is rolled to form the periphery of the indicator-drum.

The general construction and operation of the scale are set forth in theaforesaid Letters Patent, and it is unnecessary to say more about theparts of said scale set forth in the aforesaid Letters Patent than that10 and 11 indicate the draft-bars, respectively connect ed to springs 12and 13, the lower ends of said draft-bars 10 and 1]. being connected tothe meshing with pinions 19, secured to the spindle of theindicator-cylinder, provided with revoluble hearings in projections 20,removably attached to lugs 21 upon each of the east end frames 22 and23, Figs. 10, 11, and 27, said end frames 22 and 23 having theirperipheries connected to opposite ends of a cylindrical casing 24,provided with a slot 25 in its front face extending substantially thelength of the indicating-cylinder for exposing the weights and prices ofloads and With a relatively narrow exposing-opening 26 in the rear facethereof for exposing to view only the I weight of loads suspended fromthe hook or receiver 15.

' I will now proceed to describe the points, constructions, andcombinations of novelty possessed by my present invention.

The periphery of each of the end frames 22 and 23, adjacent the slot 25,is provided with an arc-shaped recess 30, in which is mounted anarc-shaped strip of glass or other transparent material directly beneathand covering said opening 25;

slots 30 and is secured at a desirable point in said slots 30 by meansof substantially U- shaped portions 32, Figs. .11, 17, and 18, and beingarc-shaped to' embrace said glass portion 31 between its arms, saidportion 32 being secured in the instance shown to the inner edge of eachof the end frames 22 and 23 by a screw or bolt 33,'securedto one partand engaging in a slot 34 in the other part, said bolt 33 and slot 34being adapted to permit theadjustment of said portions 32, so that:

said glass portion 31 will occupy different positions in said slots 30,so that the charactor-designating means upon said glass portion 31 maybe adjusted to designate the character or characters indicating the trueWeight or value. Said character-designating means consists in theinstance shown of a slot 35,

Figs. 10, 17, and 18, formed through paper or other opaque material 36,secured to the inner face of the glass portion 31, said slots 35extending over all the characters indicating the priceof articles atdifferent rates per unit, while a designating line or pointer 37, Figs.1 and 10, also secured to said glass, projects over and serves todesignate theweightindicating characters exposed through said glass 31.

by an arc-shaped glass 38, mounted in an arc-shaped frame 39, withstrips of cushioning material interposed between the edges Said glassportion 31 is less in width than the extent of said The exposing-opening26 is covered of said glass 38 and said frame 39, Figs.-24 and 26, toprevent the breakage of said glass 38, whilesaid glass is provided witha designating line-or pointer 41, adapted to designate the correctweightindicating characters indicated through said glass 38, and saidline or pointer 41 is adapted to be adjusted by the adjustment of theframe 39, in which glass 38 is mounted, said adjustment being by meansof screws 42 passing through slots 43 in said frame 39 and-into thecasing 24. (See Figs. 14, 24, and 26.)

The end frames 22 and 23 are loosely pivoted at or near their tops upona rod 44, having collars 45 thereon intermediate said end frames 22 and23 and the projections 46, passing loosely through the ends of saidshaft 44 and securing the springs 12 and 13 to said rod suspended fromsaid rod 44, as are also the springs 12 and 13 from adifferent point onsaid rod '44, so that the entire scale-casing, composed of the endframes 22 and 23, and the cylinder 24 and.the parts secured thereto areperfectly free to vibrate upon their suspendingrod 44 as a pivot, whichvibration is limited by projections 50, Figs. 10 and 25, adjustablymounted upon extensions 51 at the bottom of each of said frames 22 and'23, said projections 51 being each provided with a vertical slot 52 forthe accommodation of the draftbars 10 and 11 and the upright bars 17.Pro-' jections 50 preferably have pointed ends adj ustable toward saiddraft-bars 10 and 11 for the purpose of limiting said vibration of saidscale-casing. (See Figs. 10, 11, and 25.) For the purposes of securingthe proper adjustment of the vertical gravity-plane of the end frames 22and 23 and the parts swinging therewith readily and without undue skillor manipulation, so that said parts can be manufactured in quantitiesand then be adjusted so that said vertical gravityplane of said partswill pass through thecenter of the length as well as of the width oftheir suspending-rod 44, the center of said indicatingcylinder andsprings 12 and 13, and the center of said rods 14 and 16, I provideeither orboth of said end frames 22 and 23 with a slot or guide 53,Figs. 11 and 27, at an angle to said gravity-plane, and in said guide orslot'53 of each of said frames 22 and 23 I adjustably mount a weight 54,the adjustment of which closer to or farther from the said verticalgravity-plane correspondingly adjusts said vertical gravity-plane untilit is in the correct position, where the weight of the parts on eachside of said vertical gravity-plane will be identical and no frictionwill be caused between the portions 50 and the draft-bars 10 and 11, oreither of them, and by independently suspending the springs and thecasing from the same pivotal point the objection due to the load uponthe springs vibrating and causing the casing and draft-bars to bind instructures where the springs are suspended from the casing is obviated.

85 44, so that said frames 22 and 23 are loosely The indicating-cylinderis formed with a spindle 60, which may be either a thin rod or tube, butpreferably a tube, as shown in Fig. 23, provided with bearings 61atopposite ends of reduced diameter, and where said spindle is formed ofa thin tube said end bearings 61 are formed of pins driven into theopposite ends of said tube. The pinions 19 are driven onto or otherwisesecured to the opposite end of said spindle 60 and are provided withhubs 62, having flanged end projections 63 fitting against webs 64,provided with slots 65, through which pass screws 66 to confine saidwebs 64 between the face of said collars 63 and a washer 67, Figs- 16and 23. Said webs 64 are formed of an equalnumber of thin light arms 68,each having a rib 69 extending substantially its length, and said arms68 are connected at their outer ends to a substantially L-shapedperiphery 69 Figs. 19 and 20. Upon the periphery of and extendingbetween said portions 69 and rolled into the form of a cylinder is asheet of paper or other light material 70, which when absorbent ispreferably coated on both sides with moistureresisting material, Figs.15, 19, 20, and 28, and provided with a series of rows of characters 71,indicating the prices of loads at difierent rates per unit, and in theinstance shown with two rows 72 and 73 of weight-indicating characters,the row 73 extending in the reverse direction to the.

row 72, and when rolled upon the peripheries of said portions 69 therows 72 and 71 of characters are adapted to be indicated through theslot 25, while the row 73 of characters is adapted -to be indicatedthrough the slot'26 in the cylindrical casing 24L, Onone end of saidsheet 70 is a strip 74, Fig. 28, in the instance shown provided with nograduations, so that the opposite end of said sheet 70 may overlap saidstrip 74. for the purpose of securing the opposite ends of sheet 70together to form a cylinder. The zero-point or point of beginning foreach of the rows 71 and 72 of characters is at the point indicated at 75in Fig. 28, which is intermediate the 0pposite ends of said sheet 71 andthat said row 73 of characters beginning at a point likewiseintermediate the opposite ends of said sheet 70, which ends are joinedtogether to form a cylinder at a point, in the instance shown in Fig.28, twenty-two pounds removed from zero with respect to the rows ofcharacters 71 and 72,v so that should an inartistic joint be formedbetween the ends of said sheet 70 it will not be ordinarily exposedthrough the indicating-slots or remain exposed through them, as is thecase when such joint is formed at'the zero position. To secure saidsheet 70 to the peripheries of said portions 69,, 1 form openings 76through the peripheries of each of said portions 69 in the instance.shown,

ing openings 77. As shown in Fig. 15, near or at the opposite ends ofthe cylindrical sheet.

70 I wrap a coil of light fine wire 78, so as to bind the cylindricalsheet 70 near their opposite ends to the peripheries of said portions69, the opposite ends of said wires 78. overlapping each other, as shownat 79 in Fig. 15, and passing through said registering openings 77 and76 and coiled to the adjacent arms 68, as shown in Figs. 11, 19, and 20.As shown in said figures, the point at which the opposite ends of saidwires 78 pass through the cylindrical sheet 70 and are wrapped about theadjacent arms 68 are at different points in the arc of the circle, so asto distribute the slightly-increased weight caused thereby, and tocompensate for such increased weight and at the same time to form ameans for adjusting the longitudinal center of gravity of said indicatorto coincide with its axis of rotation I adjustably mount upon one ormore of the arms 68 Weights 80, Figs. 11 and 19, which weights 80 may beadjusted closer to or farther from the center of rotation of saidindicating-cylinder to change its center of gravity to coincide withsaid axis of rotation, which adjustment may be made very readily andcheaply and enabling the indicating-cylinders and the parts thereof tobe made in large quantities with the employment of only ordinary skilland at the same time enabling the adjustment of the center of gravity ofsaid indicator readily by comparatively unskilled persons to coincidewith its axis of rotation to enable it to be revolved upon its axisuniformly and. without influencing the counterbalance members or springs12 and 13. the instance shown in the drawings said weights 80 are formedof bands of soft material surrounding said, arms 68' and sliding thereonto correct said center of gravity when said weights 80 are adapted tobe'pinched or clamped by tweezers or other simple tool, so as to firmlybind against said arms 68 and be retained in position. i

The uprights l7, pivotally mounted upon opposite ends .of the rod 16 andhaving the racks 18 secured to the upper ends thereof, are provided withweighted arms 81, projecting from said pivotal point at substantially aright angle and in the direction toward which the teeth of the racks 18face, (see Figs. 10,

l1, and 25,) so that said weighted arms 81 cause said racks 18 toincline'toward and keep at all times in engagement with the pinion 19and out of engagement with the portion 82, Fig.11, of projection 20which extends behind each of said rack-bars 18 to prevent said rack-barsfrom moving out of mesh with their pinion 19.

The upper end of each of the end frames 22 and 23 is provided with alateral extension 100, to each of which projections 100 is removablysecured by screws or otherwise thepoints of suspension of said springsor memhers and the scale-casing, and the point of connection ofdraft-bars 10 and 11 with rod the receiver or hook 15.

lower ends receiving the ball end 105 of connecting-rod 106, pivotallyand removablyconi nected at their lower ends by cotter-pins 107 1 orotherwise to the opposite ends of the rod 5 14, which opposite ends ofsaid rod 14'are provided with a slot 108, in which the lower ends E ofsaid connections 106 and draft-bars 10 and 11 are pivotally mounted. Theupward-and downward movement of the bar 14 and itsi connected partscauses pistons 103 to move correspondingly upward and downward in? saidtubes or cylinders 102 to respectively compress and rare'f'y the air insaid tubes 102 between said pistons 103 and the closed up-} per end orhead of said cylinders 102 for the; purpose of controlling andregulating the movement of the bar 14 and its connected parts andsteadying the movementof the indicating-cylinder in driving connectionwith j The inner faces of both of said; projections 100 of the endframes 22 and 231 are provided on opposite sides with lugs 109, 1adapted tofit into slits 110, formed by L-" shaped projections 111 atthe opposite ends of the top, front, and back plates 112, Figs." 1, 10,10%, and 11, which plates 112 are for. the purpose of name-plates and togive a fin said rod 14.

ished appearance to the scale and concealing the rod 44 from view, asshown in Fig.

' 1. In the center of the length of said rod 44 is mounted looselythereon a vertical portion 113, provided on 1 the under side of said rod44 with projections 114, adapted to loosely engage collars 115, rigidlysecured to said rod 44 on opposite sides of said portion 113 andadjacent the ends of the projections 114 for the purpose of enabling theupper end of said portion 113 to have a limited lateral movement betweensaid collars 113 and at the same time prevent any lateral movement ofsaid portion 113 at its point of contact withthe bottom of'said rod 44,so as to maintain at all times the vertical alinement between the pointof contact of portion 113 against the bottom of'rod 44 and the point ofapplication of the load to the me'mber'or'hook 15 and in the same planewith the axis of the tubes or controllers 102 and the springs orcounterbalance members 12 and 13. .To the upper end of portion 113 andon opposite sides thereof are securedby belt 116 flexible strips1l7,providedthroughout their lengths with oppositely-locatedboltopenings 118 for" the reception of a bolt 119 member 15isprovidedwith a vertical slot 120, in which is mounted to slidevertically a block 121, provided with a horizontal openeases in'g 122therethrough, said opening 122 being provided with tapering edges 123for loose contact with the rod 16. Through the top wall of said slot 120is an opening, through which passes a screw 124, rigidly secured to thetop of said block 121, on the upper end of which screw 124 is mountedanut 125, adapted to engage with the upper end of said member or hook 15to draw said block 121, with its rod 16, farther from or closer to therod 14, as the case may be, for varying the position of the indicatorwith reference to the counterbal ance members or springs 12 and 13, andthrough a side wall of said slot .120 is passed a screw 126, adapted toengage and clamp said block 121 in its adjusted position in said slot,while a screw 127 passes through said hook or member 15 to clamp thesame to the center of said rod 14. I will now proceed to describe themeans have employed in the instance shown in the drawings for adjustingthe mechanism to compensate for variations due to changes intemperature, reference being had to Figs. 4, 5, 6, 7, 8, and 9. The bar14 is a long relatively thin spring-bar pivotally connected near itsopposite ends to thedraft-bars 10 and 11 and having a load receiver orhook 15, rigidly secured in the center of its length intermediate thepoints of connection with said draft-bars 10 and 11 and looselyconnected to the center of the length of the rod 16, on whose oppositeends are pivoted the indicatordriving uprights 17, all as aforesaid, andby reason of the sliding engagement between the opposite ends of saidbar 16 and the meshing of the racks 18 with pinions 19, rigidly securedto the indicator-drum, said rod 16 at all times remains in a perfectlyhorizontal position at a distance from the center of the length of thebar 14 fixed by the position of the block 121 or by that portion of hookor member 15 which engages with said rod 16. When a load is suspendedfrom the receiver or hook 15, the center of the spring-bar 14 yieldsdownward a distance proportionate to the weight of said-load,carrying-bodily down-, ward the horizontal rod 16 a like distance, whichdrives the indicator a proportionate distance, and by reason of theelongation of IIO the springs 12 and 13 in counterbalancing said loadsaid bars 14' and 16'are bodily moved downward a furtherdistance, equalor proportionate to the elongation of said springs 12 and 13, and drivesaid indicator a further proportionate distance, so that, as

is apparent from the foregoing, the springbar 14, transmitting the loadto'the springs or c'ounterbalancing members 12 and 13,

forms a part of saidcounterbalancing'means in the instance shown in thedrawings.

expand less than whenthe temperature is warm, and saidexpansionincreases as the temperature increases, and the means I havedevised compensate for such variations, "so

that an accurate scale is obtained at any or-Yf 7 I dinary temperature.

In the instance shown in'the drawings said means for compensating forthe aforesaid variations consists of one or more bars or members 150,connected at their opposite ends to the opposite ends of the bar 14, thecenter of said bars 150 passing loosely through a slot 151 in saidmember or hook and is adapted to be engaged by a projection orprojections 152 upon a shaft 153, provided with hearings in said hook ormember 15. On the outer-end of said shaft 153 is rigidly secured anlUdlCflliOPdlSk 154, marked with the different seasonssuch as Summer,Winter, and Temperate, as shown in Figs. 4 and 9, or with thecorrespondingly different degrees of temperature,

. as may be desired, which different seasons or the springs or members12 and 13 is compensated for by the reduction or elimination of theflexibility of said connection (rods 150 and 14) between said springs ormembers 12 and 13. As the temperature changes to temperate said cam 152is set to render said connection intermediate said springs or'members l2and 13 less rigid.v Duringwinter said bars 150 hang loosely from saidbar 14 and are not engaged by cam 152, whichenables said bar 14 to addall its flexibility to the elongation of the springs in order tocompensate for the reduced expansion of said springs to produce accurateresults. In thespecific structure shown in the drawings said rods 150are two in number, arrayed side by side and having their opposite endsmounted in frames 160, securedto the ends of'rod 14 by bolts 161,passing through said rods 14 and frames 160 and between said rods 150,while lock-nuts 162, Fig. 6, upon said bolts 161 maintain uniformdistances apart the ends of said rods 14 and .150.

In summer or hot weather the periphery of shaft 153 is adapted tocontact with the tops of both spring-bars 150, so that when an articleto be weighed is suspended from hook or member 15 the load will betransmitted by the three spring-bars. 14 and 150, acting together as onecomparatively rigid bar to the load-counterbalancing members or springs,while in temperate weather only one of said spring-bars 150 is engagedby the periphery of shaft-153 byreason of the recess 152 therein, sothat said bar 12 and one of said bars 150 add their elasticity to thatof the counterbalance members or springs in counterbalancing the load,while in winter or cold weather the periphery of shaft 153 does nottouch either of the bars 150 by reason of the two recesses 152registering with and extending into each'other, so that the spring-bar14 will add all its elasticity to that of the coun terbalancing membersof springs in counterbalancing the load, and under each of the aforesaidconditions of temperature the degree of elaslicity ol' thecounterbalancing members or springs and said spring-bars is equal for agiven load, which load is indicated by the indicator driven from thecenter of the length of said spring-bars 14 and 150, as aforesaid, sothat the uniform elasticity may be com munieated to the indicator at thepoint of greatest ad vantage, as if the indicator be driven from a pointat the ends of said rod 14 the elasticity of said rods 14 and 150 willbe unavailing. The ends of rods 16are bifurcated and slide over thedraft-bars 10 and 11 during the varying elasticities of said rod 14,aided by said spring-rods 150, as aforesaid.

It is perfectly obvious that if desired the disk 154 may be in the formof a designating- Ihand 155, rigidly secured to and revoluble with theshaft 153, and that numerous other alterations of the construction,form, and arrangement ofthe parts may be made without departure from thescope and spirit of this snore, that the lower ends of the piston-rodsare connected with the bar 14, so as to be readily detachable therefrom.Th us said parts may be readily separated for cleaning, oiling, orrepairing. The piston-rod may be separately detached from the draftvmechanism, the piston drawn out, and the parts cleaned with the greatestfacility without disturbing or disconnecting the other scale mechanism.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a scale, the combination of the loadcounterbalancing springs,means for applying load to said springs, a spring-bar intermediate saidload-applying means and said springs, an indicator, means for drivingsaid indicator connected centrally to said springbar, and manually-adjustable means independent of the load for varying the degree offlexnre of said spring-bar, substantially as specified.

2. In a scale, the combination of the loadcounterbalancing springs,means for applying load to said springs, a spring-bar intermediate saidload-applying means and said springs, an indicator, means for drivingsaid indicator connected centrally to said spring bar, and meansincluding a manually-adjustable cam for varying the degree of flexure ofsaid spring-bar, substantially as specified.

3. In a scale, the combination of the loadcounterbalancing springs,means for applying load to said springs, a spring-bar intermediate saidload-applying means and said springs, an indicator, means for drivingsaid indicator connected centrally to said springbar, means including amanually-adjustable ca'm for varying the degree of fleXure of saidspring-bar, and an indicator adjustable proportionate to said cam 'forindicating its proper adjustment at different temperatures,substantially as specified.

4. In a scale, the combination of the loadcounterbalancing springs,means for applying load to said springs, spring-bars, an indicator,means for driving said indicator connected centrally to one of saidspring-bars, and manually-adj ustable means for varying the degree offiexure of said spring-bars for accommodating different temperatures;substantially as specified.

5. In a scale, the combination of the loadcounterbalancing springs,means for applying load to said springs, a spring-bar, an indicator,means for driving said indicator connected centrally to said spring-bar,and a man ually-adjustable cam for varying the degree of fiexure of saidspring-bar for accommodating diiferent temperatures, substantially asspecified.

6. In a scale, the combination of the loadcounterbalancing springs,means for applying load to said springs, a spring-bar, an indicator,means for driving said indicator connected centrally to said spring-bar,means including a manually-adjustable cam for varying the degree offlexure of said spring-bar" for accommodating different temperatures,and an indicator adjustable proportionate to said cam for indicating itsproper adjustment at difierent temperatures, substantially.

as specified.

7. ha scale, the combination of the loadcounterbalancing springs, meansfor applying load to said springs, an indicator, a driving connectionbetween said indicator and said springs, manually-adjustable means forcompensating for variations in the elongation of the springs undertension due to change of temperature to which'said loadcounterbalancin gsprings may be subject and an indicator for indicating the adjustment,substantially as specified.

'8. In a scale, the combinationof the loadcounterbalancing springs,means for applying load to said springs, an indicator, a drivingconnection between said indicator and said springs, and means includinga manually-adjustable cam for compensating for variation in theelongation of the springs under tension, due to change of temperature towhich said load-counter-balancingsprings may be subjected, substantiallyas specified. v 9. In a scale, the combination of theloadcounterbalancing springs, means for applying load to said springs,an indicator, a driving connection between said indicator and saidsprings, means including a manuallyadjustable cam forv compensating forvariation in the elongation of the springs under tension, due to changeof temperature to which said load-counterbalancing springsmay besubject, and an indicator actuated by said cams for indicating the saidadjustmentof said cam, substantially as specified.

10. Inv a scale, the combination with the springs and rack bars atopposite ends, a cylindrical indicator mounted between said springs andrack-bars at opposite ends, a' bar between and connected to saidsprings, an independent bar between and connected to said rack-bars,said independent bar being loosely connected at its center to said firstbar; means for applying load to said second bar; a third bar connectedat its ends to said first bar; and adjustable means intermediate theends of said first and third bars to cause said third bar to act or failto act with said first bar, substantially as specified.

11. In a scale, the combination ,with the springs and rack bars atopposite ends, a cylindrical indicator mounted between said springs andrack-bars at opposite ends, a bar between and connected to said springs,an independent bar between and connected to said rack-bars, saidindependent bar being loosely and fourth bars connected at their ends tosaid first bar; and a man ually-adjustable cam intermediate said firstand third and fourth bars to cause said third bar and fourth bars to actor fail to act with said first bar, substantially as specified.

12. In a scale, the combination with the springs and rack-bars atopposite ends, a cylindrical indicator mounted between said springs andrack-bars at opposite ends, a bar between and connected to said springs,an independent bar between and connected to said rack-bars; saidindependent bar being loosely connected at its center to said first bar;means.

for applying load to said second bar; a third bar connected at its endsto said first bar; a

manuallyadjustable cam intermediate the ends of said first and thirdbars to cause said third bar to act or fail to act with said first bar,and an indicator for indicatingothe position of said cam, substantiallyas specified.

13. In a scale, the combination with the springs and rack-bars atopposite ends, a

.cylindrical indicator mounted between said springs and rack-bars atopposite ends, a bar between and connected to said springs, an in.-dependent bar between and connected to said rack-bars, said independentbar being loosely connected at its center to said first bar; meansopposite ends of said first bar, substantially as specified.

14. In a scale, the combination of a casing, a revoluble indicatortherein, an adjustable exposing-opening for exposing the indicationsonsaid indicator, a weight-counterbalancing member in driving connectionwith said indicator, a support and independent connections loose withrespect to each other, between said casing and said member and thesupport whereby said casing and said member may vibrate independentlywith the support as an axis; substantially as specified.

15. In a scale, the combination of a-cylindrical casing, a cylindricalindicator revolubly mounted therein and provided with a series ofperipherical rows of price indications,

an adjustable exposing-opening for exposing said indications on saidindicator, a loadcounterbalancing member near each end of said casingand in driving connection with said indicator, a loadreceiver connectedto said counterbalancing members, and a member extending across the topof said casing and to which said casing and counterbalanclng members areloosely with respect to each other and independently suspended andconstituting an axis about which said casing and said counterbalancingmember may vibrate independently; substantially as specified.

16. In a scale, the combination of a casing, suspension means therefor,an indicator mounted in said casing, a draft-bar movable proportionateto the load applied thereto, means for applying a load to saiddraft-bar, a driving connection between said draft-bar and indicator,said draft bar projecting through a slot 'in said casing, and means foradjusting the center of gravity of said casing to remain in a planepassing through the plane in which are said suspension means for thecasing and said means for applying a load to the draft-bar,substantially as specified.

17. In a scale, the combination of a casing, a suspension meanstherefor, an indicator mounted in said casing, a draft-bar movableproportionate to the 7 load applied thereto, means for applying a loadto said draft-bar, a driving connection between said draft-bar andindicator, said draft bar projecting through a slot in said casing, anda weight mounted within said casing and adjustable at an angle to thedirection of movement of said draft-bar for adjusting the center ofgravity of said casing to obviate frictional contact between said casingand draft-bar, substantially as specified.

18. In a scale, the combination of a casing,

suspension means therefor, anindicator mounted in said casing, adraft-bar movable proportionate to the load applied thereto, means forapplying a load to said draft-bar, a driving connection between saiddraft-bar and indicator, said draft-bar projecting through a slot insaid casing, and weights mounted within said casing and upon oppositesides of its center of gravity and adjustable at an angle to thedirection of movement of said draft-bar for adjusting the center ofgravity of said casing, substantially as specified.

19. In a scale, the combination of a casing, an indicator revolnblymounted therein and provided with a series of rows of charactersindicating prices at different rates per unit, load-connterhalancingmeans within saidcasing, a driving connection between saidloadcounterbalancing m'eans and said indicator,

means for independently suspending said casing and saidload-counterbalancingmeans, and a weight adj ustably secured to saidrasing for adjusting the center of gravity'of said casing,substantially. specified.

20. In a scale, the combination of an indicator consisting of aplurality of circular webbed frames, a sheet of light material providedwith a coat of moisture-resisting material, a plurality of rows of priceindications at different rates per unit and running lengthwise of saidsheet, each of said rows of indications beginning at a point difierentfrom the meeting edges of said sheet, the meeting edges of said sheetbeing secured together when said sheet is rolled in the form of acylinder about the peripheries of said frames, and bands passing aroundsaid peripheries of said frames, substantially as specified.

21. In ascale, the combination of a casing, a load-counterbalancingmeans and an indicator. mounted therein,a driving connection betweensaid counterbalancing means and said indicator extending through a slotin said casing and adapted to connect said load con nterbalanci ng meanswith a load, a weight adj ustably mounted upon said casing for adjustingthe center of gravity of said casing, and a Weight adjustably mountedupon said indicator for adjusting the center of gravity of saidindicator to coincide with its axis of rotation, substantially asdescribed.

22. In a scale, the combination of a casing,

an indicator mounted within said casing and counterbalancing means, adriving connection between said connterbalancing means and saidindicator, an exposing-opening in said casing through which indicationsupon said indicator are exposed, an arc-shaped transparent membercovering said exposingopening, a frame in which said member is mounted,means for adjustably securingsaid frame to the casing, and meansadjustable with said frame and said transparent member for designatingwhich of the indications exposed through said exposing-opening are to beread for the true indication, whereby the adjustment of said frame andsaid transparent member correspondingly adjusts said designating meansand corrects the indication, substantially as described.

23. In a scale the combination with a casing, a draft member, adrum-indicator journaled in the casing, counterbalancing-springs locatedat opposite ends of the indicator-axis and a connection between thedraft member springs and in line with the axis of the drum,

pistons in said cylinders and piston-rods detachably connected with thedraft member; substantiallyas described.

24. In spring-scales, the combination with meahs for suspending theload, of counterbalancing-springs for the load-support and load,aregulating-spring con nected therewith and means for regulating theflexure of said spring when load is applied and an indicator connectedwith the load support; substantially as described.

25. In a scale embodying counterbalancing mechanism, and a load-support,the combination of a drum having computations of value thereon andformed of circular frames, a central spindle on which they are mounted,a

sheet of flexible material on which the computations are marked,surrounding said circular frames and securing-bands passing around theflexible sheet and having their ends passed through the sheet andsecured to the circular frames; substantially as described. I

.26. In a scale embodying counterbalancing mechanism and a load-support,the combination of a drum having computations of value thereon andformed of 'circular frames, a central spindle on which they aremounted,"a sheet of flexible material on which the computations aremarked, surrounding said circular frames in the formof a cylinder withregistering openings in the sheet and peripheries of the frames andflexible bands passin g around the cylinder and having their ends passedthrough the registering apertures and held within the cylinder;substantially as described. r I

27. In a scale, the combination ofa casing, a cylindrical indicatorwithin said casing and "consisting .of-a shaft mounted in bearingswithin said casing, a plurality of light circular frames secured tosaid. shaft, a sheet mounted upon the peripheries of said frames -'andhaving-a plurality of peripherical rows of different indications, anexposing-opening extending longitudinally of this casing'for exposingsaid rows.of indications, a pinion rigid on said shaft intermediate saidbearings, means for suspending said casing, means for counterbalancingthe load and moving proportionate to the weight thereof, a draftbarconnectedto said counterbalancing means and adapted to support the load,a rack connecting said draft-bar and pinion, pneumatic dash-potcylinders removably secured at their closed ends to said casing andlocated on the outer sides of said load counterbalancing means, saidshaft, pinion and rack-bar being located between the said dash-potcylinders,

pistons in said dash-pot cylinders, end extensions on said draft-bar,and members pivotally connecting said pistons with said draftbar endextensions; substantially as specified.

28. In a scale, the combinationof a casing, a suspension means therefor,an indicator mounted in said casing, a draft-bar movable proportionateto the load applied thereto, means for applying a load to saiddraft-bar, a driving connection between said draftrbar and indicator,said draftrbar projecting through a slot in said casing, and a weightindependent of but secured to said casing to adjust ,the center ofgravity of said casing to obviate frictional contact between said casingand draft-bar, substantially as specified.

In Witness whereof I have hereunto set my hand this 15th day ofSeptember, 1899.

ALBERT U. SMITH.

Witnesses;

RUFUS WAKEMAN, GEORGE I-I. SLOVEN.

